Fail-Safe

Rip sends Len and Sara in to rescue Martin, Ray, and Mick from the Russian gulag. However, he gives Sara secondary orders in case their rescue attempt fails. Meanwhile, Ray takes a beating for Mick, while Kendra helps Jax prove himself without becoming Firestorm.

Recap

At S.T.A.R. Labs, Martin is talking with Cisco and says that he's discovered the exact formula for the thermocore needed to build a new Firestorm. Cisco says that the Firestorm matrix is unstable, and Martin points out that Harrison developed the quantum splicer to render it stable. He tells Cisco that he's happy to see him taking an interest in his work, and is surprised when Cisco calls him "sir." Martin realizes that Cisco is neat and well-dressed, and that "Cisco" is an imposter. He refuses…